The Apostle Peter
1 Peter 3:10ESV·traditional attribution

For “Whoever desires to love life and see good days, let him keep his tongue from evil and his lips from speaking deceit;

John Calvin Reformed @genevareformer

10 For he He confirms the last sentence by the testimony of David. The passage is taken from the thirty-fourth Psalm, [Psalm 34:12-16,] where the Spirit testifies that it will be well with all who keep themselves from all evil-doing and wrong-doing. The common feeling indeed favors what is very different; for men think that they expose themselves to the insolence of enemies, if they do not boldly defend themselves.

Matthew Henry Presbyterian @wholebiblehenry

The apostle here passes from special to more general exhortations. I. He teaches us how Christians and friends should treat one another. He advises Christians to be all of one mind, to be unanimous in the belief of the same faith, and the practice of the same duties of religion; and, whereas the Christians at that time were many of them in a suffering condition...

Commenting on 1 Peter 3:8-15

John Gill Reformed Baptist @doctorgill

For he that will love life,.... This, with what follows here and in the two next verses, are taken out of Psa 34:12 and are produced as a proof of what is before said; that it is a good man's duty not to do or speak evil in return for what is done or said to him; but on the contrary, it becomes him to...